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Design considerations for charge equalization of an electric vehicle battery system

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4 Author(s)
N. H. Kutkut ; PowerDesigners LLC, Middleton, WI, USA ; H. L. N. Wiegman ; D. M. Divan ; D. W. Novotny

Charge equalization for series-connected battery strings has important ramifications on battery life. It enhances the uniformity of the battery cells and, hence, improves the life of the battery as a whole. A new charge equalization technique for a series string of battery cells has been recently proposed by the authors. The basic technique utilizes a simple isolated DC-to-DC power converter with a capacitive output filter along with a multiwinding transformer. The possibility of integrating the trickle charge function with the charge equalization function is potentially very attractive, as it can lead to an efficient and low-cost implementation

Published in:

IEEE Transactions on Industry Applications  (Volume:35 ,  Issue: 1 )